She said the SWAT officers, who were dropped off in a remote area with their weapons drawn, belonged to that department.

[Added at 1:53 p.m.]: Thea Hardy, a spokeswoman for Big Bear Mountain Resort, says the search is focused more around Bear Mountain, which has been closed as a precaution.

"Bear Mountain is going to be closed for the afternoon," she told us.

She said guests can go to Snow Summit guest services, which will honor their Bear Mountain lift tickets.

[Added at 1:58 p.m.]: There are reports saying authorities have confirmed the truck belongs to Dorner, but both the San Bernardino County Sheriff's Department and the LAPD told the Weekly there is no confirmation on that ... yet.

[Added at 2:12 p.m.]: Miller of the San Bernardino Sheriff's Department reiterated that the truck's provenance has not been confirmed.

In fact, she told the Weekly that it was so badly burned that authorities could not even confirm whether or not it's a Nissan Titan.

She said some schools in the area are on lock-down as a precaution, but that sheriff's officials did not order or request they take that precaution.

Miller confirmed that SWAT team members were sent to the area to search for Dorner.

[Update at 3:34]: San Bernardino County Sheriff-Coroner John McMahon told reporters in Big Bear this afternoon that the truck was indeed allegedly used by Dorner.

A body was not found inside the vehicle, he said. The pickup was reported to cops about 2:30 p.m., according to the sheriff.

He said deputies continued to search for the suspect -- including door-to-door efforts --and would set up checkpoints so that vehicles entering and exiting the area would be checked out.

[Update at 5:16 p.m.]: The San Bernardino Sheriff's Department said in a statement tonight that the truck was actually found at 8:35 in the morning; it wasn't until 2:30 p.m. that they confirmed it was Dorner's.

That suggests the possibility that he could be long gone, but cops have set up checkpoints and continue to search the area. The department states:

Deputies are also positioned on Hwy 18 in Lucerne Valley, Hwy 330 in Highland and Hwy 18 in Yucaipa monitoring traffic that is travelling up and down the mountain.

The pickup was found near "Forest Road 2N10 and Club View," according to the statement.

[Update at 8:25 a.m. Friday]: Tracks allegedly left by Dorner mysteriously led police nowhere, authorities said this morning, setting off extensive speculation by reporters and others at the scene of the search that Dorner may have created a clever misdirection by burning his car. San Bernardino County Sheriff's spokeswoman Cindy Bachman said she was unaware of clues left by Dorner such as tracks from a second getaway car.

The massive dragnet that now includes northern Mexico, Nevada and Arizona was forced to waste time overnight when a hoaxer reported Dorner was inside a house in San Diego County.

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Dennis Romero is an L.A. Weekly staff writer. He formerly worked at the Philadelphia Inquirer and the Los Angeles Times, where he participated in Pulitzer Prize-winning coverage of the L.A. riots. His work has appeared in Rolling Stone online, the Guardian and, as a young stringer, the New York Times.